/Engine/Plugins/Animation/IKRig/Source/IKRigEditor/Public/RigEditor/IKRigController.h
Called whenever the rig is modified in such a way that would require re-initialization by dependent systems.
typedef TMulticastDelegate_OneParam< void, [UIKRigDefinition](API\Plugins\IKRig\Rig\UIKRigDefinition) * > FOnIKRigNeedsInitialized